Loom-shuttle.



0. BROWN. LOOM SHUTTLE.

APPLICATION FILED OCT-16, 1916- 1,,229,578. Patented June 12, 1917.

Wineisa, 72019172 02,

DAVID IBRQWN, 0F LAWRENCE, MASSACHUSETTS.

Loom-SHUTTLE.

ieeee'ze,

Specification of Letters Patent.

Patented June 12, 191?.

Applioetion filed @ctober 16, 1916. Serial It'd. 125,842.

"0 all whom it may 00mm;

' Be it lmown that l, DAVIDBROWN, e'citizen of the United States,residing at Lewrenee,'in the county of Essex and Etate of Massachusetts,have invented an Improvement in Loom-Shuttles, of Which the following ise specification. l

This invention relates to that class of loom shuttles, which are edeptedto receive the ordinary Wooden bobbin, and also the poper-eoptubes' onwhich threed is ire quently wound, when sold in cop form; a cop-tube ofthis character being; made to serve as e bobbin, When the shuttle inwhich it is usedis provided with means for holding it in place on thespindle.

Prior to my invention, shuttles have been produced Whiehere providedwith means adapted to secure either the paper cop-tube, or Wooden bobbinon the spindle, b ut, so for as I am aware, these devices have eitherbeen expensive to manufacture, or unreliable, in holding the paperbobbin. in place.

The object of my invention is to providev e form of shuttle of thisohoraeter "which is adopted to hold either form of bobbin insuoh omanner that all possibility that the bobbin "ll bees-me loose on thespindle will be avoided, and which may be l'fltdfl an expense butslightly in excess of that incurred in melting a shuttleadapted-"to reeeive 3. Wooden bobbin only.

if accomplish these objects by the means shown in the accompanyingdrewing, in which:-- I

- Figure 1 is a plan view of a loom shuttle embodying my invention, andshowing the parts in position for use.

l ig. Qis a, central longitudinal section thereof. v

Fig. 3 is e siiniler'view,'showing the spindle swung out of shuttle,pef'f'mit the changing of the bobbin. I

Fig. t is e cross-sectional view on the line 5 is a view, similar to"Fig. Q, and

showing 2. Wooden bobbin in nositionin the tle body, and adapted topermit the spindle v v 'i .1, e boobih wnion tapering edeowd to be swungto the oblique position of Fig. 3, to permit the bobbin to be changed.The shank 0 has a rigid arm 0, which extends from the under sidethereof, and et'the opposite end thereof from the I spindle. A

spring 6 is arranged to engage the spindle shank a through a. followerf, to hold it in normal position, said spring permitting 'out- Wardswinging of the spindle against its action.

According" to my invention, two spring fingers g vand it are secured,one. on the other, against the under side of the shank arm 0, by meansof the pin or rivet 7S, Whieh passes therethrough edj scent theends,there' of, the finger hbeing held directly against the arm 0 andthe-finger 9 against the under side of the fingei h. Said ho ers areorrenged to extend beneath the shank endtlie base" end of the spindle,end are provided With bobbin-engaging toes g: and 5", respectively,arranged to extend et approximately right angles thereto, toward thestillndle, and each having e coneeve recess in'its end corresponding tothe curvature of the bobbin which it is to engage, as hereineiterdescribed. The toe k of the spring linger next the spindle sh'snl: isarranged to extend toward the spindle near the boss of the letter, andthe toe g on finger 7, is disposed at e'short distance therebeyond. Astoppin j is mounted in the shuttle body adj the front end of the spiodie shank, the sidejof thepivot thereof the spindle, and between saidshank end the fingers g and it, the

' positionv thereof being such thet, when spindle is lying in ts normalposrtionin' the shuttle, the spindle shank will lie in close proximitythereto, as indicated in' Fig. and, when the spindle is upwerdly,corresponding npW-erd swinging movement of the free end-portions thefingers g and it will be they will preetioelly be drawn swey from thespindle it is lifted. groove b" is to ed in spimdle (5 its beseisnd'seidgroove being a. in such at position that the "erned toe it", the fingerit, will en the spin 1e is in its orinsl posfotion indieetes e been 3pepentgbe rem receive the spindle 32 and pieced on, so that its base endshots against the spindle shank-e; "When in position the tube extendsover the ennnler groove iii of the ordinary frictional engagement wererelied I on. .The toe h is,,also, so located that,.when a wooden bobbin'1 is placed on the spindle, the end of its base will "be placed againstsaid toe h, and the bobbin will be held in position to receive theupturned toe 'g, in its holding groove, as shown in Fig. 5. It will thusbe apparent that either form of bobbin may be securely held in positionin the shutvtle, in practically the same manner.

The expense of manufacture of a shuttle, such as above described, is butslightly greater than that of the ordinary shuttle of i the same type,and less than that of various other devices adapted to receive bothlrinds of bobbins, which are in use. u

In the above-described construction, the provision of independent springfingers, ar-

ranged respectively to engage a paper or a wooden bobbin, also possessesvarious other advantages, which are of practical importance,particularly as compared with a device in which a single spring is bentto provide means for engaging both the paper and wooden bobbins, for thefollowing reasonsz-It is very essential that a strong pressure beapplied to the paper bobbin or tube to hold it in place, for it has nogroove, in which the spring finger may engage, so

. that a frictional engagement of some form must be relied on to hold itin place. The diameters ofthe bases of the Wooden bobbins vary to asubstantial extent, so that the spring finger must-not only be sprungoutwardly far enough to permit the bobbin to be placed in position on.the spindle, but

it is fre uently held fpr long 'periods in a strained position. Agradual weakening of the spring is thus. caused, so that it will soonbecome weakened to such an extent that it will not grip thepaper bobbinor tube with sufficient firmness to hold it securely, although it willsecurely hold the grooved wooden bobbin, which is not held by frictionalengagement, and, therefore, to hold which does not require anyparticular degree of tension in the holding spring. It is alsodifiicult, as a practical matter, so to form an intermediate portion ofa fiat spring that it will bite intothe paper bob- ,bin or tube to asufiicient extent to hold the latter efi'ectively. With thearrangement'of two independent spring fingers herein described, theexcesj 'sive strain, which is, or may be placed on the finger whichholds thaw'ooden bobbin,

in no way affects the finger which the paper bobbin, while the fingerwhich holds the wooden bobbin acts to reinforce the other finger, sothat a double spring tension is at all times effective to hold the paperbobbin.

I claim l. A loom shuttle having a pivotally" mounted spindle adapted toreceive either a Wooden bobbin or apaper cop-tube, a pair of fingerssupported adjacent the pivoted end of said spindle, one having itsendportion slin'ing-actuated to engage the bob- 2; A lpom shuttle havinga pivotally mounted spindle adapted to receive either a wooden bobbin ora paper cop-tube, a pair. of spring fingers mounted adjacent the pivotedend of said spindle, one of saidfingers being arrangdd to clamp a co-tube against the spindle and the other to ock a bobbin on the spindleand to yield independently of the cop-tube clamping finger, and means toforce said fingers from their operative positions when the spindle ismoved/from its normal position.

3. A loom shuttle having a spindle pivotally mounted therein, andadapted to receive either awooden bobbin or a paper coptube, a pairofspring fingers mounted adjacent the pivoted end of said spindle andextending longitudinally thereof, one of said fingers having a catchadapted to engage the base of a-bobbin to lock it on the spindle" and tobe sprung outwardly from the spindle independently of the other finger,and the latter finger having its end portion arranged normally to clampa cop-tube against the spindle. i

4. A loom shuttle havinga spindle pivotally mounted therein adapted to rceiv e either a wooden bobbin or a paper co tube, a pair of springfingers fastened'one 0'1 the other against said spindle adjacent itspivot, the outermost finger extending beyond the innermost and havingmeans at its end to engage and lock a bobbin-on the spindle and theinnermost finger having means at its end to clamp a cop-tube against thespindle, and means-arranged to engage the inits end, thefoutermost ofsaid fingersextending beyondthe' other and spring actuated meagre topress its toe into the groove of a bobbin base on the spindle, and theinnermost of said fingers being spring actuated to press itstoe againsta cop-tube on the spindle, to clamp the tube thereagainst, and havingthe side of its toe arrangedto provide a stop for the base end of aWooden bobbinand fmeans to force said fingers away from the spindle whenthe latter is swung out from the shuttle.

6. In a loom shuttle'a pivotaiiy mounted shank having a spindle carriedthereby, a pair of superimposed spring fingers rigidly secured, one onthe other, at corresponding ends to said shank, so that the outer fingermay act to reinforce the inner finger and may he sprung outwardlyindependently thereof, each of said fingers having interned,bobbin-engaging projections, with the innerfinger having its projectionnormally extending in clamping engagement with the spindle, and theouter finger with its projection normally disposed to engage in thegrooved base of a bobbin on the spin die, and means on the shuttle bodyto hold the free ends of said fingers against outward swinging movementwith the spindle,

In testimon whereof Ihavesi ed D11 y 7 gm 5 name to this specification.

DAVE) BROWN. Witnesses L. Emmi/MN, Ananon SWEENEY.

